The easiest method to integrate Demio with ClickFunnels would be to use our built-in embed code options alongside the ClickFunnels Elements section.
To start, you'll need to grab the unstyled embed code for the Registration Form from your event. You can find exactly how to do that: Embed Your Registration Form.
Note: when using the unstyled form, if you make any changes to your event, you should generate a new code to embed on your website.
On ClickFunnels
Once you have the code ready, you'll want to add it using the ELEMENTS tab on ClickFunnels. Next, select ADD ELEMENTS.
In the Elements window:
Scroll down and click on the Custom JS/ HTML widget.
Drag that widget to your ideal spot on your ClickFunnels page.
Then click on the Custom Javascript/ HTML box on the page to open the Editor. Open the code editor and paste your code in the box.
Close the Editor and click on Save.
Preview the page to see your embedded form.
If you're looking to list multiple Events, you can do so with the Showcase feature.